as in enigma
something hard to understand or explain why my sister married that guy is still a mystery to my parents

Synonyms & Similar Words

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Synonym Chooser

How does the noun mystery differ from other similar words?

Some common synonyms of mystery are enigma, problem, puzzle, and riddle. While all these words mean "something which baffles or perplexes," mystery applies to what cannot be fully understood by reason or less strictly to whatever resists or defies explanation.

the mystery of the stone monoliths

Where would enigma be a reasonable alternative to mystery?

While the synonyms enigma and mystery are close in meaning, enigma applies to utterance or behavior that is very difficult to interpret.

his suicide remains an enigma

When might problem be a better fit than mystery?

The words problem and mystery can be used in similar contexts, but problem applies to a question or difficulty calling for a solution or causing concern.

problems created by high technology

When is puzzle a more appropriate choice than mystery?

The synonyms puzzle and mystery are sometimes interchangeable, but puzzle applies to an enigma or problem that challenges ingenuity for its solution.

the thief's motives were a puzzle for the police

When is it sensible to use riddle instead of mystery?

Although the words riddle and mystery have much in common, riddle suggests an enigma or problem involving paradox or apparent contradiction.

the riddle of the reclusive pop star

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of mystery Their quest: to finally solve the mystery of the Nameless and their connection to the Force, and to stop the blight before its damage becomes irreversible. Dalton Ross, EW.com, 29 May 2025 Adding to the mystery, Teleios emits only in radio wavelengths, with a hint of hydrogen-alpha emissions. Stefanie Waldek, Space.com, 29 May 2025 Editor’s note: The podcast Chasing Life With Dr. Sanjay Gupta explores the medical science behind some of life’s mysteries big and small. Andrea Kane, CNN Money, 28 May 2025 Ray is an enigma and a mystery, a man who zips into town on a motorbike like a phantom and could just as easily evaporate at any minute. Ryan Lattanzio, IndieWire, 18 May 2025 See All Example Sentences for mystery
Recent Examples of Synonyms for mystery
Noun
  • Bacon’s Castle was originally built by Arthur Allen, who remains something of an enigma to historians, according to the National Park Service.
    Mark Price, Miami Herald, 2 June 2025
  • History/Universal Images Group via Getty Images To many observers of China, its top leader, Xi Jinping, is an enigma.
    Emily Feng, NPR, 28 May 2025
Noun
  • Need help with today’s Connections: Sports Edition puzzle?
    Mark Cooper, New York Times, 28 May 2025
  • Most days, there are between three and five clues in each direction on a five by five grid, but the puzzles are sometimes larger, especially on Saturdays.
    Paul Tassi, Forbes.com, 27 May 2025
Noun
  • Worth just a cent but costing nearly four times that to produce, the fiscal riddle of the penny has long been a paradox of the federal government.
    Mandy Taheri, MSNBC Newsweek, 29 May 2025
  • Each puzzle book is 32 pages and has a wide variety of puzzles, including sticker puzzles, word searches, Mad Libs–style storytelling, and riddles.
    Adrienne So, Wired News, 17 May 2025
Noun
  • Is that the secret to looking and feeling great in your 80s?
    Janine Rubenstein, People.com, 5 June 2025
  • Both are rivals on ice but share a secret away from the hockey rink that could change their lives.
    Etan Vlessing, HollywoodReporter, 5 June 2025
Noun
  • The problem, blamed on outdated wastewater infrastructure, has persisted for decades but has spiraled in recent years as Tijuana's population skyrocketed.
    Ryan Gaydos, FOXNews.com, 5 June 2025
  • Read more: Fishing Communities in the Philippines Are Fighting for their Future as Waters Rise The bigger problem is that human society—policymakers, companies, and financial institutions—simply hasn’t figured out how to value all that oceans do for us.
    Justin Worland, Time, 5 June 2025

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Cite this Entry

“Mystery.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/mystery. Accessed 10 Jun. 2025.

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